package com.itheima.dao;
/*
* 类型转换
* */
public class demo6 {
    public static void main(String[] args) {
       /* byte d = 3 + 4;
        System.out.println(d);
        long num = 123456789123456789L;*/

       /* byte d = 3 + 4;
        System.out.println(d);
        long num = 123456789123456789L;*/

        byte d = 3 + 4;
        System.out.println(d);
        long num = 123456789123456789L;
    }
}
